It is when a person considers the minuscule amount of energy we obtain from these things, but if they started to seriously tap into these energy sources, you would see changes. I think maybe like a half of a percentage of the energy used in the US comes from these sources.
BTW, hydro power, ones that can actually provide serious amounts of energy, need you to dam up huge rivers. Extend the analogy to sunlight, wind, etc.
You can't extend the analogy because solar and wind are nothing like a moving body of water.
I can't say what the actual percentage nationwide is but there are laws now that require electric companies to generate a certain percentage from reknewable sources and in my area (Mid Atlantic region of the country) the local electric company gets 30% of it's energy from solar and wind.